Fluorescent aptasensor for detection of Salmonella typhimurium using boric acid-functionalized terbium metal-organic framework and magnetic nanoparticles.

A fluorescent detection platform was designed using boric acid-functionalized terbium metal-organic framework (BA-Tb-MOF) and carboxyl-modified magnetic nanoparticles (MNPs) to identify Salmonella typhimurium (S. typhimurium) bacteria. Firstly, carboxyl-modified FeOMNPs were coated with specific aptamer (Apt-MNPs) as the capture probe for S.